Update int.cloudbuild.yaml

Author: apeabody

build/int.cloudbuild.yaml

@@ -37,6 +37,7 @@ steps:
       # Do not prune if changing tests themselves
       _INFRA_FOLDERS="build test .github"
       for d in _changed_folders; do
+        echo "${d%/}"
         if [[ "${_INFRA_FOLDERS}" =~ "${d%/}" ]]; then
           echo "Infrastructure folders have changed; no tests will be pruned."
           exit 0 # do not prune